A couple of decades ago ( ), I did empirical research about how librarians thought about titles. Back then librarians were really the most advanced information scientists. In fact, they probably still are — except that today, people who are almost completely illiterate do not realize how stupid they really are (mainly because they’re also ignorant ).
Today there are basically 2 kinds of blog post titles:
SEO title posts (written for people who type in questions)
Answers (basically telling you what the detailed post says)